You’ll need to take off the lower radiator hose. That one ought to be obvious. If it’s not been off before have a replacement hose clip (of the correct size) ready as the existing one may be reusable if it is Clic-R type but it may well be the type that basically has to be destroyed to get it off.
If you’re concerned about old fluid still being present connect a hose-pipe to the reservoir and run fresh water through the system for a while with the bottom hose on and off. Don’t forget to have the the heater on hot when you flush and when you fill and then run the engine.

 

Thanks for the fast reply, I dreaded as much.

There's the intercooler because of it being a turbo that's in the way of an already tight fit. I might be able to release the clamp after I've jacked up the car.

For the record, the clamp on the lower radiator hose has obviously been changed to a screw-on type (my favourite), but there is so little space it's going to be a pain in the buttocks.

Again, thanks, I'll manage to sort it out.

 

There is a threaded hole on the right hand (as you look at the car) side of the back of the radiator. I think it is for a temperature sensor on early cars and has a blanking plug on later cars. You can easily undo the plug and drain a fair bit of coolant that way. I found it easier to get to than the lower hose.

 

This is exactly why I come to this board

Proper tip, hope I manage to find it. Thanks a lot!

 

I've did find the threaded hole, it's what the manual refers to as the thermal contact.

Now, what bother's me is two things. First, I'm flushing the system, and the radiator fans did not come on but the coolant was about to overflow from the expansion tank. This is when I turned off the car and left it to cool. I'll pump the mix out and put antifreeze next.

What I want to know is, can I put the expansion cap back on while heating up the engine? The manual sort of implies that the cap is off, but I always saw them screwed back on as soon as you top up the coolant. Also, can I drive the car to heat it up instead of leaving it in neutral? It seems to take forever for it to heat up, I waited 20 minutes today and it's 30 celsius outside.

Second, the air should bleed out by itself, hopefully not through the expansion tank cap being left off. Is there some kind of air release I should trigger? I did see an air valve as pictured (mine is a TB, but the location of this valve is the same as in the photo). Is this a bleed valve or is it something to do with the aircon?

 

That is one of the aircon regas valves, can't remember exactly but I think that is the low pressure side.

 

The cooling system is pressurised when the cap is on. This allows the coolant to reach a higher temperature without boiling. Running the car with the cap off means the coolant could expand and/or boil. It also may not reach the correct temperature for the fans to kick in.